Rolling mill guide



July 14, 1931. P. G. PALMGREN ,81

ROLLING MILL GUIDE Filed Oct. 17, 1929 2 Sheets-Sheet 2 INVENTOR PERGUN/VAR PAL MGRE/V Patented July 14, 1931 UNITED STATES PATENT OFFICEPER GUNNAR PALMGREN, OF GOTTENBORG, SWEDEN, ASSIGNOR TO .AKTIEBOLAGETSVENSKA. KULLAGERFABRIKEN, OF GOTTENBORG, SWEDEN, A CORPORATION OFSWEDEN ROLLING MILL GUIDE Application filed October 17, 1929, Serial No.400,209, and in Sweden October 23, 1928.

In many cases it is usual to providea guide before the rolls in rolllngm1lls in order to guide the material to the pass and to prevent it fromtwisting in the pass.

The present invention is for the purpose of avoiding the disadvantagesexperienced with guides now in use and consists malnly of an arrangementby which the guide is .kept open to allow the material to enter and isautomatically closed after the material has been gripped by the rolls.By this means the entrance of the material into the guide is greatlyfacilitated, while a satisfactory guidance is obtained. This guide maybe operated mechanically. Thenmpulse required to make the closingmechanism function is obtained by the working load on the rolls.

This present application is closely related to another application whichI am filing concurrently herewith, this present application relatingparticularly to a design whereby the variation in load on the rolls ofthe rolling mill is utilized for actuating the guides. v

The accompanying drawings show'a pre ferred form of an embodiment of theinven-.

tion, in which drawings Figure 1 shows an axial section through aguiide, the rolls being shown in cross-section, an

Fig. 2 shows a cross-section through the same guide.

A pair of work rolls 15 and 16 are illustrated between which is to bepassed the bar 14 for the purpose of reducing it. The purpose of theinvention is to uide the oncoming portion of the bar as 1t is passingbetween the rolls.

The guide is represented as comprisin two halves denoted by the numerals1 an 2 which are carried by bell crank levers 32 33 rotatable about afixed pivot 34. The bell crank levers are connected to links 37 and 38by means of joints 35 and 36. The links 37 and 38 are connected to a bar41 through a joint 39. The bar 41 is fixed in a transverse beam 40resting on the bearing housings 42 and 43 of the upper roll 15. When thematerial enters the pass the upper 34 thus closin 1. The combinationwith a mill provided I with rolls, of guides for the material adapted toopen the close, and an element connected to and following the up anddown movement of the rolls as the material enters or leaves the pass forclosing and opening the guides.

2. The combination with a mill having a frame and provided with rollsand bearings supporting such rolls, of uides for the material adapted toopen an close, and means associated with the bearings and adapted tofollow the up and down movement of one of the rolls as the materialenters or leaves the pass for closing and opening the guides.

In testimony whereof I have signed my name.

PER GUN N AR PALMGREN.

